US4780576AExpiredUtility

Insulated electrical cable

27
Assignee: SUMITOMO ELECTRIC INDUSTRIESPriority: Mar 6, 1986Filed: Mar 6, 1987Granted: Oct 25, 1988
Est. expiryMar 6, 2006(expired)· nominal 20-yr term from priority
Inventors:Mineya Kuno
H01B 9/027H01B 3/441C08L 2203/202C08L 23/0815C08L 23/0853Y10T428/2967C08L 2312/00
27
PatentIndex Score
3
Cited by
9
References
7
Claims

Abstract

An insulated electrical cable is disclosed, comprising an electrical conductor coated with an insulating layer comprising an ethylene/α-olefin copolymer having a density of from 0.89 to 0.91 and an ethylene/vinyl acetate copolymer.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. An insulated electrical cable comprising an electrical conductor coated with an insulating layer comprising an ethylene/α-olefin copolymer having a density of from 0.89 to 0.91 and an ethylene/vinyl acetate copolymer, wherein the content of said ethylene/vinyl acetate copolymer in said insulating layer is in a range of from 5 to 30 wt% and wherein the vinyl acetate content of said ethylene/vinyl acetate copolymer in said insulating layer is in a range of from 5 to 45 wt%. 
     
     
       2. An insulated electrical cable as in claim 1 comprising an electrical conductor coated consecutively with an inner semiconducting layer, said insulating layer, and an outer semiconducting layer. 
     
     
       3. An insulated electrical cable as in claim 1, wherein said insulating layer is crosslinked. 
     
     
       4. An insulated electrical cable as in claim 1, wherein the content of said ethylene/vinyl acetate copolymer in said insulating layer is in a range of from 15 to 30 wt%. 
     
     
       5. An insulated electrical cable as in claim 1, wherein the content of said ethylene/α-olefin copolymer in said insulating layer is 35 wt% or more. 
     
     
       6. An insulated electrical cable as in claim 1, wherein the vinyl acetate content of said ethylene/vinyl acetate copolymer in said insulating layer is in a range of from 10 to 30 wt%. 
     
     
       7. An insulated electrical cable comprising an electrical conductor coated with an insulating layer consisting essentially of an ethylene/α-olefin copolymer having a density of from 0.89 to 0.91 and an ethylene/vinyl acetate copolymer, wherein the content of said ethylene/vinyl acetate copolymer in said insulating layer is in a range of from 5 to 30 wt% and wherein the vinyl acetate content of said ethylene/vinyl acetate copolymer in said insulating layer is in a range of from 5 to 45 wt%.

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